Kynurenic acid is utilized in neuroscience research due to its role as an antagonist of excitatory amino acid receptors, particularly the NMDA receptor. This property makes it valuable in studying neurological disorders such as schizophrenia, epilepsy, and Alzheimer's disease, where glutamate signaling is often dysregulated. Additionally, it is explored for its potential neuroprotective effects, as it may help mitigate excitotoxicity, a process linked to neuronal damage in conditions like stroke and traumatic brain injury. In the field of immunology, kynurenic acid is investigated for its anti-inflammatory properties, as it influences immune responses and may modulate conditions like inflammatory bowel disease. Its presence in the gut microbiome also highlights its potential role in maintaining gut health and influencing systemic inflammation.